Alright, let's work through 2207 times 1640 step by step
2207 × 1640 = 1640 × (2207)
+ 1640 × 7 that equals 11480
+ 1640 × 00 yielding 0
+ 1640 × 200 what gives us 328000
+ 1640 × 2000 resulting in 3280000

= 3619480
